package com.wen.mall.product.service.impl;

import com.wen.common.constant.ProductConstant;
import com.wen.mall.product.dao.AttrAttrgroupRelationDao;
import com.wen.mall.product.entity.AttrAttrgroupRelationEntity;
import com.wen.mall.product.entity.AttrEntity;
import com.wen.mall.product.service.AttrService;
import com.wen.mall.product.vo.AttrGroupRelationVo;
import com.wen.mall.product.vo.AttrGroupWithAttrsVo;
import com.wen.mall.product.vo.SpuItemAttrGroupVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.wen.common.utils.PageUtils;
import com.wen.common.utils.Query;

import com.wen.mall.product.dao.AttrGroupDao;
import com.wen.mall.product.entity.AttrGroupEntity;
import com.wen.mall.product.service.AttrGroupService;
import org.springframework.util.StringUtils;

import javax.management.relation.Relation;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    private AttrAttrgroupRelationDao relationDao;

    @Autowired
    private AttrService attrService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catalogId) {
        String key = (String) params.get("key");
        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>().eq("catalog_id", catalogId);
        if (!StringUtils.isEmpty(key)){
            wrapper.and((obj)->{
                obj.eq("attr_group_id", key).or().like("attr_group_name", key);
            });
        }
        if (catalogId == 0){
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
                    new QueryWrapper<>());
            return new PageUtils(page);
        }else {
            wrapper.eq("catalog_id", catalogId);
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
                    wrapper);
            return new PageUtils(page);
        }
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        //relationDao.delete(new QueryWrapper<>().eq("attr_id",1L).eq("attr_group_id",1L));
        //
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 根据分类id查出所有的分组以及这些组里面的属性
     * @param catalogId
     * @return
     */
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catalogId) {
        //com.atguigu.gulimall.product.vo
        //1、查询分组信息
        List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>().eq("catalog_id", catalogId));

        //2、查询所有属性
        List<AttrGroupWithAttrsVo> collect = attrGroupEntities.stream().map(group -> {
            AttrGroupWithAttrsVo attrsVo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(group,attrsVo);
            List<AttrEntity> attrs = attrService.getRelationAttr(attrsVo.getAttrGroupId());
            attrsVo.setAttrs(attrs);
            return attrsVo;
        }).collect(Collectors.toList());

        return collect;


    }

    @Override
    public List<SpuItemAttrGroupVo> getAttrGroupWithAttrsBySpuId(Long spuId, Long catalogId) {
        //1、查出当前spu对应的所有属性的分组信息以及当前分组下的所有属性对应的值
        AttrGroupDao baseMapper = this.getBaseMapper();

        return baseMapper.getAttrGroupWithAttrsBySpuId(spuId,catalogId);
    }

}
